/Engine/Source/Runtime/SlateCore/Public/Types/NavigationMetaData.h
Set the navigation behavior for the provided navigation type to be explicit, using a constant widget
void SetNavigationExplicit ( EUINavigation InNavigation, [TSharedPtr](API\Runtime\Core\Templates\TSharedPtr)< [SWidget](API\Runtime\SlateCore\Widgets\SWidget) > InFocusRecipient )